What is that?

Improviz is a general purpose Node.js library to construct algorithmic, time-based, events structure compositions. It is an almost direct porting of my previous library for Processing, UPlayLib, which is now discontinued.

Status

Improviz is in a very early stage. It needs more tests and usage case as well as the whole documentation.

Installation

• Clone this repository
• Run npm install (prepend sudo if you're under MacOsX)

Requirements

Right now there's only the MIDI interface so in order to use the library you need at least one MIDI interface available on your computer

Basic tutorial

Here a basic example in order to generate a simple structure

// the path is relative to your file
require('./../lib/Improviz.js');

// define the MIDI port number
var m = new Midi(1);

// define the main player
var p = new Player(m);
p.play();

// add a Track
var t = new Track(0);
p.add(t);

// add a Sequence
var s = new Sequence();
t.add(s);

// add a bounch of Note
for(var i=0; i<12; ++i){
	// a Note is defined with the MIDI timbre (0-127), the duration (in milliseconds) and a Velocity value (0-127)
	var n = new Note( 60+i, 100, 127);
    s.add(n);
}

The playhead is already running due the command p.play(); Your MIDI device should receive MIDI notes

Run the Example

cd <improviz-path>/examples/
node 01_basic_standard.js

Then open Chrome browser and point it to:

http://localhost:3000/clients/WebSocket.html